QuickField Student Edition

User manual

Data Libraries

Free tools

Complex power and impedance calculator

AC magnetic problems utilize complex numbers arithmetic to represent values sinusoidally varying in time. This calculator facilitates complex numbers (phasors) arithmetic operations: impedance and power calculation.

Real (Re) Imaginary (Im) Magnitude Phase
Voltage magnitude V [V] i * V °
Current magnitude I [A] i * A °
Impedance Z = V / I [Ohm] i * Ohm °
Power S = ½ * (V * I*)
W i * VAr V*A

If you see negative power value this indicates that power is generated (source).

Voltage ——
Current ——
+1 0 +i

Counter-clockwise rotation of vectors.

The software is provided "as is" and the author disclaims all warranties with regard to this software including all implied warranties of merchantability and fitness. in no event shall the author be liable for any special, direct, indirect, or consequential damages or any damages whatsoever resulting from loss of use, data or profits, whether in an action of contract, negligence or other tortious action, arising out of or in connection with the use or performance of this software.